Physics Quiz: Current Electricity Trivia Questions!

10 Questions | Total Attempts: 3282

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Physics Quiz: Current Electricity Trivia Questions!


Questions and Answers
  • 1. 
    Charge of 60 C passes through an electric lamp in 2 minutes. Then the current in the lamp is
    • A. 

      0.5 A

    • B. 

      30 A

    • C. 

      1 A

    • D. 

      5A

  • 2. 
    The material through which electric charge can flow easily is
    • A. 

      Copper

    • B. 

      Germanium

    • C. 

      Quartz

    • D. 

      Mica

  • 3. 
    The current flowing in a conductor is proportional to
    • A. 

      Drift velocity

    • B. 

      1/ area of cross section

    • C. 

      1/no of electrons

    • D. 

      Square of area of cross section.

  • 4. 
    A toaster operating at 240V has a resistance of 120Ω. The power is
    • A. 

      480 W

    • B. 

      400 W

    • C. 

      2 W

    • D. 

      240 W

  • 5. 
    If the length of a copper wire has a certain resistance R, then on doubling the length its specific resistance
    • A. 

      Will remain the same

    • B. 

      Will be doubled

    • C. 

      Will become 1/4 th

    • D. 

      Will become 4 times

  • 6. 
    • A. 

      1 Ω

    • B. 

      2 Ω

    • C. 

      0.5 Ω

    • D. 

      4 Ω

  • 7. 
    In the case of insulators, as the temperature decreases, resistivity
    • A. 

      Increases

    • B. 

      Becomes zero

    • C. 

      Decreases

    • D. 

      Remains constant

  • 8. 
    If the resistance of a coil is 2 Ω at and α = 0.004 /, then its resistance at  is
    • A. 

      2.8 Ω

    • B. 

      0 Ω

    • C. 

      1.4 Ω

    • D. 

      4 Ω

  • 9. 
    According to Faraday’s law of electrolysis, when a current is passed, the mass of ions deposited at the cathode is independent of
    • A. 

      Resistance

    • B. 

      Time

    • C. 

      Charge

    • D. 

      Current

  • 10. 
    When n resistors of equal resistances (R) are connected in series, the effective resistance is
    • A. 

      NR

    • B. 

      1/nR

    • C. 

      R/n

    • D. 

      N/R